I’m really new to .net Controllers and the use of tft Displays. We are using the ChipworkX Module and things are running quite good,
the Developmentprocess is very fast with this board. But due to cost savings for series production, we decided to switch to the G120 Module, and so we ordered the FEZ Cobra II with WiFi Option last week. The delivery time is a 4Weeks so i’m trying to get some Informations about the integrated tft controller.
In normal it seems there are some important signals which every TFT Display needs:
VSync, HSync, Clk
and the color signals:
R0-7, B0-7, G0-7 (when using 24bit color depth)
As i mentioned i never used a tft LCD before, but the main idea is, to use the 3.5’’ TE Display Module when getting started with the Cobra board, but later on,
it should be possible to use other tft LCD’s (5’’ or up to 7’’).
So the first question is, that i noticed that the color signals on the .net Controllers are B0-4, G0-5, R0-4.
It seams that it should be possible to connect nearly every TFT Display like a 7’’ 24bit RGB TFT, but the color resolution cannot be used.
The unused color signals should then be hold on a certain level(push up or pull down to Digital Display Supply) i think.
And may someone explain me the purpose of 5bit Blue, 5bit Red but 6bit Green Color Depth?
As my collegue who does the Software part mentioned, it is possible to use 24bit colors in Software, but in my opinion this does not make any sense, because the integrated tft controller only uses 16bit on the physical Interface.
Thanks for any tipps and advices,
best regards Christian